private void ClearChangeIndicator()
{
DataGridAutomationPeer automationPeer = (DataGridAutomationPeer)DataGridAutomationPeer.CreatePeerForElement(NodeMetadataDataGrid);
// Get the DataGridRowsPresenterAutomationPeer so we can find the rows in the data grid...
DataGridRowsPresenterAutomationPeer dataGridRowsPresenterAutomationPeer = automationPeer.GetChildren().
Where(a => (a is DataGridRowsPresenterAutomationPeer)).
Select(a => (a as DataGridRowsPresenterAutomationPeer)).
FirstOrDefault();
if (null != dataGridRowsPresenterAutomationPeer)
{
foreach (var item in dataGridRowsPresenterAutomationPeer.GetChildren())
{
// loop to find the DataGridCellAutomationPeer from which we can interrogate the owner -- which is a DataGridRow
foreach (var subitem in (item as DataGridItemAutomationPeer).GetChildren())
{
if ((subitem is DataGridCellAutomationPeer))
{
// At last -- the only public method for finding a row....
DataGridRow row = DataGridRow.GetRowContainingElement(((subitem as DataGridCellAutomationPeer).Owner as FrameworkElement));
row.Foreground = new SolidColorBrush(Colors.Black);
}
}
}
}
}
/// <summary>
/// Scrolls a DataGridRow into view.
/// </summary>
/// <param name="itemsControl">The DataGrid containing the row.</param>
/// <param name="itemContainer">The DataGridRow object.</param>
protected override void ScrollIntoView(DataGrid itemsControl, DataGridRow itemContainer)
{
IScrollProvider scrollInfo = (IScrollProvider)DataGridAutomationPeer.CreatePeerForElement(itemsControl);
double horizontalScrollPercentBeforeScroll = scrollInfo.HorizontalScrollPercent;
double verticalScrollPercentBeforeScroll = scrollInfo.VerticalScrollPercent;
itemsControl.ScrollIntoView(itemContainer.DataContext, null);
double horizontalScrollPercentAfterScroll = scrollInfo.HorizontalScrollPercent;
double verticalScrollPercentAfterScroll = scrollInfo.VerticalScrollPercent;
double horizontalDiff = horizontalScrollPercentAfterScroll - horizontalScrollPercentBeforeScroll;
double verticalDiff = verticalScrollPercentAfterScroll - verticalScrollPercentBeforeScroll;
scrollInfo.SetScrollPercent(scrollInfo.HorizontalScrollPercent + (horizontalDiff / 2.0), scrollInfo.VerticalScrollPercent + (verticalDiff / 2.0));
}
public DataGridRow GetDataGridRowByDataContext(DataGrid dataGrid, object dataContext)
{
if (null != dataContext)
{
DataGridAutomationPeer automationPeer = (DataGridAutomationPeer)DataGridAutomationPeer.CreatePeerForElement(dataGrid);
// Get the DataGridRowsPresenterAutomationPeer so we can find the rows in the data grid...
DataGridRowsPresenterAutomationPeer dataGridRowsPresenterAutomationPeer = automationPeer.GetChildren().
Where(a => (a is DataGridRowsPresenterAutomationPeer)).
Select(a => (a as DataGridRowsPresenterAutomationPeer)).
FirstOrDefault();
if (null != dataGridRowsPresenterAutomationPeer)
{
foreach (var item in dataGridRowsPresenterAutomationPeer.GetChildren())
{
// loop to find the DataGridCellAutomationPeer from which we can interrogate the owner -- which is a DataGridRow
foreach (var subitem in (item as DataGridItemAutomationPeer).GetChildren())
{
if ((subitem is DataGridCellAutomationPeer))
{
// At last -- the only public method for finding a row....
DataGridRow row = DataGridRow.GetRowContainingElement(((subitem as DataGridCellAutomationPeer).Owner as FrameworkElement));
// check this row to see if it is bound to the requested dataContext.
if ((row.DataContext) == dataContext)
{
return(row);
}
break; // Only need to check one cell in each row
}
}
}
}
}
return(null);
}